@article{VMUMM_1990_3_a2,
     author = {I. V. Aleksandrov},
     title = {Topological analysis of a {Hamiltonian} system with a noncommuting complete set of integrals},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {13--18},
     publisher = {mathdoc},
     number = {3},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1990_3_a2/}
}